Podcast
Questions and Answers
What is another name for myopia?
What is another name for myopia?
- Astigmatism
- Hypermetropia
- Near-sightedness (correct)
- Presbyopia
In myopia, where is the image of a distant object formed in the eye?
In myopia, where is the image of a distant object formed in the eye?
- Behind the retina (correct)
- At the back of the eye lens
- On the retina
- At the far point
What type of lens can be used to correct myopia?
What type of lens can be used to correct myopia?
- Cylindrical lens
- Plano-concave lens (correct)
- Bifocal lens
- Convex lens
How does myopia affect a person's ability to see objects at different distances?
How does myopia affect a person's ability to see objects at different distances?
What can cause myopia to develop in an individual?
What can cause myopia to develop in an individual?
Flashcards
Myopia
Myopia
Nearsightedness, a condition where close objects are seen clearly, but distant objects appear blurry.
Image Formation in Myopia
Image Formation in Myopia
In front of the retina, instead of directly on it, causing blurred vision for distant objects.
Myopia Correction Lens
Myopia Correction Lens
A diverging lens that spreads light rays to focus the image correctly on the retina.
Myopia Vision
Myopia Vision
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Cause of Myopia
Cause of Myopia
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Study Notes
Myopia (Nearsightedness)
- Myopia is a defect in which a person can see nearby objects clearly but cannot see distant objects distinctly.
- In a myopic eye, the far point is nearer than infinity, and the person may see clearly up to a distance of a few meters.
- The image of a distant object is formed in front of the retina, not at the retina itself.
- Myopia can arise due to:
- Excessive curvature of the eye lens
- Elongation of the eyeball
- This defect can be corrected by using a concave lens of suitable power.
- A concave lens of suitable power will bring the image back onto the retina, thus correcting the defect.
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